Kursheed, Dler, Faraedon Zardawi, Hadi Ismail, Aras Rauf, and Sarhang Gul. “Decoding of Periodontal Screening and Recording Index”. Erbil Dental Journal (EDJ) 4, no. 1 (July 30, 2021): 33-39. Accessed January 21, 2022. https://edj.hmu.edu.krd/index.php/journal/article/view/104.